Baker&#39;s oven-cleaning device



May 11 1926. 1 584,21 4

B. CASTRO BAKER'S OVEN CLEANING DEVICE Filed Feb. 25 1925 INVENTOR.

6 ATZRNEYS.

Patented May 11, 1926.

warren stares Fries;

BENJAMIN CASTRO, OF LONG BEACH, CALIFORNIA.

BAKERS OVEN-CLEANING DEVICE.

Application filed February 25, 1925 Serial No. 11,421.

This invention relates to a cleaning device for bakers ovens, that is intended for use in cleaning the horizontal flues under the oven proper, or which might be applied in connection with the oven proper if desired.

The invention has for an object the provision of a novel and improved device of this sort by means of which the said fiues can be more readily and efiiciently cleaned.

For further comprehension of the invention, and of the objects and advantages thereof, reference will be had to the following description and accompanying drawand to the appended claims in which the various novel features of the invention are more particularly set forth.

Fig. l of the drawing is a side view of a bakers oven having the invention applied thereto.

Fig. 2 is a fragmentary longitudinal verticalesectional View, this view being taken on the line 2--2 of Fig. 3.

Fig. 3 is a detail transverse sectional View taken on the line 3-3 of Fig. 2.

Fig. 4 is a detail plan view of the brush frame.

Figs. 5 and 6 are detail elevational views showing different brushes that may be used.

In the drawings the reference numeral 10 indicates a bakers oven. being shown as provided with two ovens l1 and under the latter the usual horizontal flues, 12 that are connected at the front by the side upright conduits 12. The ovens and fines are provided with doors 14 and 15 respectively, provided on the usual metal front wall element 16 of the oven. In each flue I provide a pair of bars at each side thereof, these bars extending along the fine, one above the other, the respective bars of each pair being numbered 20 and 21. These bars are supported by means of the upright links 22 and 23 located respectively at front and rear ends of the fines and pivotally mounted in the oven wall as by engagement with the cross rods 24 in the said oven wall, the bars being pivotally attached at their ends to the said arms.

The top bars 20 are formed on their undersides with rack teeth such as 28. These rack teeth are adapted to be engaged by pinions 29 on the ends of the trunnions or shafts of rotary brush elements, of which I may provide a hair or fibre brush 30 and a steel brush 30, the brush being indicated in dotted lines as in Figs-2 and 3 of the drawing, as mounted on a shaftf3l to the ends of which the gear pinions 29 are fixed. When the pinions are. engaged with the rack teeth 28 they reston the top edge of the lower bars 21. The brush is adapted to be moved along the flue by means of a frame element comprising a U-shaped rod 85 that is formed at its lower edge and adjacent its ends with notches such as 36 that engage the shaft 31 .at the ends of the. latter. This rod has attached thereto a handle 37 of suitable length. The various parts areso proportioned that when the arms 22, 23 are upright as shown the brush will engage the top of the flue, the brush being of slightly less. diameter than the height of the fine, so that its bottom is then clear of the bottom of the flue. By swinging the arms to an oblique position the bars 20, 21 are lowered sufhciently for the brush to contact with the bottom of the flue. To secure the said swingable element comprising bars and arms, in adjusted position each arm 22 at the front end of the flue has attached thereto a link 40 that is attach-ed in turn to a rod 41 slidable in a suitable .aperture in the front wall 16 of the oven and formed with a pair of notches 42 in either of which a latch 43 pivoted to the front wall of the oven is selectively engaged. V

It is believed that the manner of use of my improved device will be readily understood from the above description. The brush to be used is inserted in the end of the flue with its gear pinions 29 engaged between the upper and lower bars 20 and 21. The handle element is then engaged with the brush and the latter pushed inward along the flue. Since the brush is caused to rotate, by reason of the engagement of the gear pinions 29 with the rack teeth, 28 and since the periphery of the brush moves faster than the periphery of the gear pinions, the brush will sweep backward on the top of the flue. After the brush has reach-ed the inner end of the flue the rods 41 are moved lnward, lowering the saidv swingable element and causing the lower edges of brush to contact with the bottom of the flue. When the brush is pulled outward the bottom of the flue is swept by the brush. It will be understood that a sufficiently loose connection will be left between the gear pinions 29 and the bars 20, 21 to allow of the slight variation of spacing of the bars that occurs as the arms change from a vertical to an inclined posi-' tion.

Having thus described my invention, what I claim as new and desire to protect by Letters Patent of the United States is as follows: .e e

1. In a bakers oven, a horizontal flue, a frame elementeonsisting of apair of vertically spaced bars extending along each side of the flue, means for raising and lowering said frames, and means on said frames whereby rotary movement may be imparted to a brush moved therealong.

2. In a bakers oven,'a horizontal flue, a frame element consisting of a p'air of vertically spaced bars extending along each side of the flue, means for'raising'a'nd lowering said frames, and means on said"frames whereby rotary movement may be imparted to a brush moved therealong, comprising rack teeth on the upperbar of each frame.

3. In a bakers oven, a. horizontal flue, a frame element consisting'ota pair of vertically spaced bars extending along each side of theflue, means for raising. and lowering said frames, and means on said frames whereby rotary movement may be imparted to a brush moved therealong, and a brush having gear pinions co-axially fixed thereto engaged with said gear teeth.

4. In a bakers oven, a horizontal flue, cleaning means therefor comprising a swingable frame element extending along each side of the flue, each of said elements comprising upper and lowerhorizontal, bars, the upper bars being formed-0n their lower edges'with rack teeth, arms pivoted to the oven structure at their lower ends 'on which the said bars are supported, a brush havinga gear pin-ion on each of its trunnions, said gear pinions resting on thelow'er bars andgenga gin-g the teeth on'tlie upper bars, and a handle element attached to said brush to move the same along the flue. c

5. In a bakers oven, a horizontal flue, cleaning means therefor comprising a swingable frame element extending along each side of the flue, each of said elements comprising upper andrlower horizontal bars, the upper bars being formed on their lower edges with rack teeth, arms pivoted to the oven structure at their lower ends on which the said bars are supported, a brushhaving a gear pinion on each of its trunnion's, said gear pinions resting on the lower bars and engaging the teethon the upper bars, and a handle element attached to said brush to move the same along the flue, said handle elementjhaving a forked forward end formed with notches in which the said trunnio-ns are freely engaged. v e

6. In a bakers even, a horizontal flue, cleaning'means therefor comprising a swingable frame element extending along each side of the flue, each of said elements comprising upper and lower horizontalbars, the upper bars being formed on their lower edges with rack teeth, ar-mspivoted to the oven structure at their lower ends on which the said bars are supported, a brush having a gear pinion oneaeh of its trnnnions, said gear pinions resting on the lower bars and engaging the teeth on the upper bars, and a handle element attached to said brush to move the same along the flue, and means for retainingthe said frames in adjusted positions, comprising a link attached to the frame, a rod attached to the link and extending through the front wall of the oven and having a pair of notches formed therein and relatively spaced therealong, anda latch on the front wall of the ovenadapted to be selectively engaged with either of said notches. i I I In testimony whereof I have affixed my signature. V i v,

BENJAMIN CASTRO. 

